Metal-chip briquette



Patented Mar. 2, 1926.-

unirau earner erica;

GEORGE E. GAIL, JR., F LONTIAC, MICHIGAN, ASSIGNOE OF ONE-SIXTH TO HARRYA. SIBLEY AND ONE-SIXTH T0 GEGEGE A BROVJN, BOTH OF PONTIAC, MICHIGANMETAL-CHIP BRIQUETTE.

I No Drawing.

To all whom it may concern:

Be it known that I, Gnoncn E. GAIL, Jr., a citizen of the United Statesof America, residing at Pontiac, in the county of Oakland and State ofMichigan, have invented certain new and useful Improvements inMetal-Chip Briquettes, of which the following is a specification.

The invention relates to the manufacture of briquettes of finely dividedscrap metal such as cast iron borings, turnings etc. The obiect of theinvention is to produce a bri uette adapted to be used in a cupola sothat the scrap metal may be re-melted in a foundry instead of beingreturned to the blast furnace, the latter being the usual practies.

In order to provide a practical briquette for use in a cupola it isnecessary to provide a suitable binding material which is capable ofwithstanding a very high temperature so that the briquette will retainits form until the metallic ingredients assume the molten condition. Myimproved briquette will fulfill the above requirements and in addition,is capable of being manufactured by a simple and cheap process so that areat saving is made by briquetting all of the scrap material andreintroducing the same into the cupola.

According to my invention the metallic chips are mixed with a dilutedsolution of commercial water-glass (silicate of soda) and then placed insuitable molds in which the metal is compressed by tamping or othersuitable means. Th briquette is then dried preferably by heating to atemperature of approximately 100 F. for from 15 minutes to an hour andthen removed from the mold.

In this condition it is ready for immediate use in the cupola.

As an example of the process which may be used in the practicalpreparation of the briquettes one ton of iron chips is mixed 4 with asolution comprising one and one-half gallons of commercial water-glass47 Baum and ten gallons of water. This mixture may be molded to anydesired size, but as an example, I prefer to form fifty pound Serial No.6,459.

briquettes since this has been found to be.

a good practical size for the cupola. What I claim as my invention is:

l. A briquette adapted comprising a dried comp tallic chips and a binderincorporated therefor use in cupolas acted block of mein consistingsolely of diluted liquid Water glass, said briquette bein capable ofWithstanding high ten'iperatures without premature disintegration.

2. A briquette adapted for use in cupolas comprising a dried compactedmixture of finely divided cast iron scrap metal and a binder consistingsolely water-glass said mixture tially the following proportions, iron,one

of diluted liquid being in substanchips with a binder. consisting solelyof liquid water-glass, compressing the mixture in a mold, and drying thesame.

4:. The process of manufacturing briquettes comprising the mixing of asborings, turnings and the like with a binder consisting solely glass themixture being metallic chips such 76 of diluted waterin the proportionsof substantially one and one-half gallons of commercial water glass andten gallons of water to one ton of metal, compressing the mixture in amold and heating to a temperature of substantially 100 or over.

5. A briquette adapted comprising a dried comp F. for 15 minutes for usein cupolas acted block of metallic chips and a binder incorporatedtherein containing liquid water glass as the principal ingredient, saidbriquette being capable of withstanding high temperatures withoutpremature disinte ration.

6. A briquette adapted for use in cupolas comprising a dried compactedmixture of finely divided cast iron scrap Ilibbutl and a binder ofdlluted water glass, said briquette being capable of withstanding hightemperatures without premature disintegration,

the binding action bein to the water glass.

,9, due principally 7. A briquette adapted for use in Cupolascomprisinga dried compacted mixture of finely divided cast iron scrapmetal and a binder containing diluted liquid Water glass, said mixturebeing in substantially the following proportions, iroin one ton,commercial water glass one and one-half gallons, Water tengall011s,'tlie binding action in said mixture being due principally tothe Water glass.

8. A briquette adapted for use in Cupolas comprising a driedcon'ipacl'ed block of inetallic chips and a binder incorporated thereincontaining liquid water glass, said briquette being capable ofwithstanding high temperatures Without premature disintcgiiation, thebinding action being due, prim cipally to the Water glass.

In testimony whereof I fli'fiX my signature.

GEORGE E. GAIL, J".

